ASTRIS

GitHub

Astris

Engine

Minecraft 26.3

Last launch

Settings

Nickname Animated background

Limit FPS to the monitor’s refresh rate Worker threads Auto

Memory limit Auto

Launch logs to keep

Resource packs & shaders

Resource pack Shader

Horizon files over the network I understand the risks

64-bit build (wasm64)

Touch screen

Storage

GET {address}/__astris.json
  [["horizon-resources.json", 2048], ["assets/minecraft/lang/en_us.json", 551234], ...]
GET {address}/{path}

Access-Control-Allow-Origin: https://astris.example
Cross-Origin-Resource-Policy: cross-origin

# Minimal Astris server: hands out the 26.3 folder and its file list.
import json
from functools import partial
from http.server import SimpleHTTPRequestHandler, ThreadingHTTPServer
from pathlib import Path

ROOT = Path("26.3")                    # the prepared folder (with horizon-resources.json)
ORIGIN = "https://astris.example"      # where the launcher is opened
PORT = 8790

LISTING = json.dumps([[p.relative_to(ROOT).as_posix(), p.stat().st_size]
                      for p in sorted(ROOT.rglob("*")) if p.is_file()]).encode()


class Source(SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header("Access-Control-Allow-Origin", ORIGIN)
        self.send_header("Cross-Origin-Resource-Policy", "cross-origin")
        super().end_headers()

    def do_GET(self):
        if self.path == "/__astris.json":
            self.send_response(200)
            self.send_header("Content-Type", "application/json")
            self.send_header("Content-Length", str(len(LISTING)))
            self.end_headers()
            self.wfile.write(LISTING)
        else:
            super().do_GET()

    def list_directory(self, path):
        self.send_error(403)           # files only, no folder listings

    def log_message(self, *args):
        pass


ThreadingHTTPServer(("0.0.0.0", PORT), partial(Source, directory=str(ROOT))).serve_forever()

Licences

Game resources

Sounds (~370 MB)

What is Horizon?

Which Horizon build to choose?

nightly-2026-10-30-ba6344a (Minecraft 26.3)

Choose a ZIP Sounds (~370 MB)

Support the project